[XYZ]

Does it have a passenger a/c heater control on the roof?

 

[XYZ]

Yes

Open it and unplug it to see if anything changes.

 

[XYZ]

Need help. Husband is tech savvy and this has him frustrated. Got in one morning and all lights on dash lit and bus error. He has taken this van apart and replaced the tcim and then disconnected one module at a time. 4 days later no idea where or what is causing this and havent been able to narrow it down.

Can you update us on the outcome so we can better understand what is happening please.